扩展vmware虚机磁盘空间

虚机的CPU、内存扩展都很容易,磁盘空间也是能够扩展的只是相对来讲操做要略复杂一些。linux

一。用root用户登陆到你的linux系统,查看你系统的分区
#fdisk -l
会出现如下的信息:
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
/dev/sda2 64 2611 20458496 8e Linux LVMapp

Disk /dev/mapper/vg_zxw-lv_root: 18.8 GB, 18832424960 bytes
255 heads, 63 sectors/track, 2289 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000ide

Disk /dev/mapper/vg_zxw-lv_root doesn't contain a valid partition table字体

Disk /dev/mapper/vg_zxw-lv_swap: 2113 MB, 2113929216 bytes
255 heads, 63 sectors/track, 257 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000ui

Disk /dev/mapper/vg_zxw-lv_swap doesn't contain a valid partition table
根据提示信息能够判断出此系统的磁盘接口为SCSI,对应“sda”若是上面的红色字体是“hda”,那么此系统的磁盘接口为IDE对应“hda”因此我作一下操做:this

#fdisk /dev/sda/
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').code

Command (m for help):m //“ 列出fdisk的帮助”
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)orm

Command (m for help):n //” 命令n用于添加新分区"
Command action
e extended
p primary partition (1-4)
p //" 选择建立主分区"此时,
Partition number (1-4):3 //fdisk会让你选择主分区的编号,若是已经有了主分区sda1,sda2,那么编号就选3,即要建立的该分区为sda3.
First cylinder (2611-3916, default 2611): //此时,fdisk又会让你选择该分区的开始值这个就是分区的Start 值(start cylinder);这里最好直接按回车,
Using default value 2611
Last cylinder, +cylinders or +size{K,M,G} (2611-3916, default 3916): //此时,fdisk又会让你选择该分区的开始值这个就是分区的End 值这里最好直接按回车,
Using default value 3916接口

Command (m for help): w //w "保存全部并退出,分区划分完毕"
The partition table has been altered!内存

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.

2、咱们的新建分区/dev/sda3,却不是LVM的。因此,接下来使用fdisk将其改为LVM的。
#fdisk /dev/sda
Command (m for help): m
Command (m for help): t //改变分区系统id
Partition number (1-4): 3 //指定分区号
Hex code (type L to list codes): 8e //指定要改为的id号,8e表明LVM。
Command (m for help): w

3、重启系统后,登录系统。(必定要重启系统,不然没法扩充新分区)

4、格式化该新添加的分区:
#fdisk -l
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
/dev/sda2 64 2611 20458496 8e Linux LVM
/dev/sda3 2611 3916 10483750 8e Linux LVM
你会发现多了一块分区。
#mkfs -t ext3 /dev/sda3 //在硬盘分区“/dev/sda3”上建立“ext3”文件系统。
此时咱们就可使用该新增分区啦:

5、扩充新分区
#lvs
#pvcreate /dev/sda3 //pvcreate指令用于将物理硬盘分区初始化为物理卷,以便被LVM使用。要建立物理卷必须首先对硬盘进行分区,而且将硬盘分区的类型设置为“8e”后,才能使用pvcreat指令将分区初始化为物理卷。
Physical volume "/dev/sda3" successfully created
#vgextend VolGroup00 /dev/sda3 (其中是当前须要扩充的lvm组名,能够经过df -h查看,例如个人是: /dev/mapper/VolGroup00-LogVol00) //vgextend指令用于动态的扩展卷组,它经过向卷组中添加物理卷来增长卷组的容量。
#vgdisplay //用于显示LNM卷组的元数据信息。
--- Volume group ---
VG Name vg_zxw
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 19.51 GiB
PE Size 4.00 MiB
Total PE 4994
Alloc PE / Size 4994 / 19.51 GiB
Free PE / Size 4994 / 10.01GB
VG UUID sqBgTs-iA8x-tCXZ-KYxK-SyWS-TfXQ-uBsLaR
(主要查看Free PE / Size 4994 / 10.01GB,说明咱们最多能够有10.01GB的扩充空间。我通常选择小于10.01GB)

lvextend -L+9.8G /dev/VolGroup00/LogVol00 /dev/sda3

Logical volume LogVol00 successfully resized#e2fsck -a /dev/VolGroup00/LogVol00 //使用e2fsck指令检查文件系统错误。也可用“fsck -t ext2 -V /dev/sda3/检查ext2文件系统。 (作fsck,检查文件系统)#resize2fs /dev/VolGroup00/LogVol00 //resize2fs指令被用来增大或者收缩未加载的“ext2/ext3”文件系统的大小。#df -h //查看一下你的系统磁盘空间"/"目录变成了40GBok,这样就大功告成了。

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